The psychoanalysis of neurotics has taught us to recognize the intimate connection between wetting the bed and the character trait of ambition.

Religion is a system of wishful illusions together with a disavowal of reality, such as we find nowhere else but in a state of blissful hallucinatory confusion. Religion's eleventh commandment is "Thou shalt not question."

History is just new people making old mistakes.

The more the fruits of knowledge become accessible to men, the more widespread is the decline of religious belief.

I consider it a good rule for letter-writing to leave unmentioned what the recipient already knows, and instead tell him something new.

At first the analysing physician could do no more than discover the unconscious material that was concealed from the patient, put it together, and, at the right moment, communicate it to him. Psychoanalysis was then first and foremost an art of interpreting. Since this did not solve the therapeutic problem, a further aim quickly came in view: to oblige the patient to confirm the analyst's construction from his own memory.

The moment a man questions the meaning and value of life, he is sick, since objectively neither has any existence; by asking this question one is merely admitting to a store of unsatisfied libido to which something else must have happened, a kind of fermentation leading to sadness and depression.